Bible Dictionaries
Plesiosauria
Webster's Dictionary
(n. pl.) An extinct order of Mesozoic marine reptiles including the genera Plesiosaurus, and allied forms; - called also Sauropterygia.
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Bibliography Information
Webster, Noah. Entry for 'Plesiosauria'. Noah Webster's American Dictionary. https://www.studylight.org/dictionaries/eng/web/p/plesiosauria.html. 1828.